UPSC NDA II 2010 General Ability Paper

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Directions (Qs. No. 138-141): These items consist of two statements, statement I and statement II. You are to examine these two statements carefully and select the answers to these items using the code given below:
Code:
1. Both the statements are individually true and statement II is the correct explanation of statement I
2. Both the statements are individually true but statement II is not the correct explanation of statement I
3. Statement I is true but statement II is false
4. Statement I is false but statement II is true
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Question : 140 of 150
 
Marks: +1, -0
Statement I : Human beings have 23 pair of chromosomes, one of which is the sex chromosome and the remaining 22 autosomes. The X-linked diseases are related to mutations on a sex chromosome
Statement II : Colour blindness results from a mutation in X chromosome
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